When you become a believer in Jesus Christ, the Spirit of God does three things for you. He regenerates you, he baptizes you into the body of believers, and he seals you unto the day of redemption. When you love the Lord, he can do more for you, and you know that he is alive in you.
In John 14:15-18, Jesus said, “If you love me, keep my commandments. And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever. Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
Look at what the Bible says about the Holy Spirit in Romans 8:11, “But if the Spirit of him that raised up Jesus from the dead dwell in you, he that raised up Christ from the dead shall also quicken your mortal bodies by his Spirit that dwelleth in you.”
This is not just any old Spirit. He is the same Spirit of God that raised up Jesus from the dead, and he is alive in you. He is the most powerful Spirit in the Universe, and He is alive in you. You have access to him 24 hours a day. He will never leave you nor forsake you. He will teach you all things, and bring all things to your remembrance.
All of the promises of God apply to you. That’s why you can say with confidence. “Greater is he that is in me than he that is in the world. I can do all things through Christ, who strengthens me. My God shall supply all your needs, according to his riches in glory.”
You don’t have to be afraid of anything, because the greater one lives in you. He will protect you, and nothing shall by any means hurt you.